The name of the new rehab centre has not been revealed, but it is reportedly in Southern California and the source claims she checked in late on Monday.

Lindsay, who most recently spent 23 days in a live-in program at UCLA Medical Centre, apparently plans to "step up her treatment" and "do more" than previously expected, according to the source.

Meanwhile, Lindsay's clashes with the law are apparently affecting her career. Her latest film role, in rom-com One Night With You, has reportedly been given to Valentine's Day's Taylor Swift.

But the producers of Linda Lovelace biopic Inferno have apparently said they are willing to wait for Lindsay to star in their movie.

Sources on the movie told TMZ.com they are now planning to delay shooting the film until January and want to shoot in Los Angeles instead of Louisiana, where they would have received considerable tax breaks.